Machine tool



May 31, 1932. w H BAUCH MACHINE TOOL Filed Dec. 19, 1929 4 Sheets-Shget 1 I N V EN TOR.

W/A L/f/M 17. 5771/ (l-l,

M ZMMM w A TTORNEY5.

y 1932- v w. H. BAucH 1,860,700

MACHINE TOOL Filed Dec. 19, 1929 4 Sheets-Sheet 2 ATTORNEYfi.

May 31, 1932. w BAUCH 1,860,700

MACHINE TOOL Filed Dec. 19, 1929 4 Sheets-Sheet 5 A TTORNEYS.

Patented May 31 1932b i c g UNETEiD STATE N f E F i-FFC E WILLIAM H. BAUCI-I, orsHELBYvILLE, INDIANA, ASSIGNOR To INDIANA. FOUND Y,

MACHINE & surrrrr COMPANY, or BRAZIL, INDIANAL a conronerroN- MncHINE TOOL Application filed December 19, 1929. Serial No.415, 198.

This invention relates to a machine tool the same. Fig. 3 is a sectional view takenon wherein a plurality of rotaryworkingtools the line 33 of Fig. 1. Fig. 4 is a side view are used-simultaneously to operate upon a of one of the individual working tool units. piece of material. Such tools may be drills, Fig. 5 is a rear view ofthe same. Fig. dis a 5 milling cutters polishers, grinders or similar sectional view taken on the line 6+6 of Fig; 55

rotary tools, 4. Fig. 7 is a fragmentary view of a portion The principal object of the invention is to of the adjusting mechanism of the working provide an extremely flexible apparatus tool unit. Fig. 8isafragmentarv rearelevawherein the working tools'may be adjusted tional ;view of the machine with parts cut 7 13 to many desired positions with respect to the away to show other parts in detail. Figp9is 60 work with the minimum loss of time. Y t a sectional view illustrating the method ofat- Another object of the invention is to contaching the working tools to their individual struct a machine of the character described motors. Fig. '10is a sectional view'taken on which can be economically built. the line 1O 1O of Fig. -9. Q 1 V 15 The principal feature of the invention re- A pair of end framemembers 10 and 11 65 sides in the provision of independent worksupport longitudinal frame members'12and ing tool units each having an independent 13, herein shown assubstantially channel motive power for rotating the working tool shaped in section. At each end of the maand each adjustable upon the frame of the machine a' casting 14L rests upon the frame memQ 2O chine to many desired posit-ions and angles bers 10 and 11 and is bolted to the frame 7 of attack. lVhile the said units are provided members 12 and- 13 to provide the necessary with independent power means for rotating stiffness to the structure. Each of the .memeach tool, a commonpower drive is provided bers 12 and 13 carries upon its outer face a for simultaneously advancing all of the said pair of dove-tailed guide ways 15 adapted to 9 tools toward the piece of material to be oplidably' support a plurality of working tool erated upon and for simultaneously retract units each indicatedgenerally by the numeral ing the same therefrom. 16., At each end of the machine a vertical Another feature of the invention resides in fra m mb r 17 rests u on the members 10 the particular form of the advancing and reand 11 and a longitudinal frame member 18 0 tracting mechanism used. v is supported thereby. The frame member Another feature 'ofthe invention resides- 18 carries n it u r' urfae a pair of in the operating mechanism whereby the addove-tailed guide membersl9. ';A plurality of Taming Of the 0 1s is ini ia working tool units 20 similar in every re il another feature-of the v ntio spect to the units'le are slidably supported Sides in the Specific construction of h uponthe frame member 18 and are guided dividual woriiing tool units; and the method the dovemailed member's. A p a i y of connecting the working tools to their re f Cross members 21am p 'fip the SPectlvve 1 1 frame members 12 and 13 and serveto 'sup; f the -mf am 9 ces-gnp 10H port a piecev of material 22 to be operated 90 .he invention is 1%l11fiti'flll6d asuapplied t8 a p g V multi )le s indle cri press. irowever, iis 7 n i descri PtioIi is to be understood tobe illustra- Each of the Working tool umts a 2 tive only and not intended as a limitation of i a upportmg l mung the invention to such use. dolyetalled l 24 a d tofmgage h Gther objects and features and the full gulde members 5 harm nature of the invention will be apparent W y extendmg PQ castmg 26 from the following specifications and claims 18 fastened t0 the memberigii Y S andthe attached drawings. 7 bolts. 27. The rearwardlyextendingportlon 'Fig. 1 is a front elevational view of the 25 of the casting 23 extendsthroughan openmachine. Fig. 2'is an end elevational view of ing 28 in the casting 26 and the bolts 27 extend through slotted openings 29 in the said casting.

A rod 30 threadedly engages the portion 25 of the casting 23 and extends downwardly therefrom through an opening 31 in the lower portion of the casting 26. A nut 32 threadly engagesthe lower end of said rod. ,By this construction the bolts 27 may be loosened and the casting 26 may be moved with reference to the casting 23 by manipulation of the nut 32. In the moving of the said casting, it is guided by means of shoulders 33 formed on the casting 23 and extending into the opening 28.

Each of the castings 26 has a rearwardly extending portion 34 upon which-is mounted a casting 35. The casting 35 has a circular portion 36 projecting through an opening in the casting 26. A flange 37 is bolted' to the said portion 36 and serves toretain the casting 35 in position with respect to the casting 26. The circular portion 36 serves as a pivot about which the casting 35 may be rotated with respect to the casting 26. A bolt 38 extends through an arcuate opening 39 in the casting 26 and threadedly engages the casting 35 for maintaining the said casting at any desired angle with respect to the casting 26. a p r The casting 35 carries dove-tailed guideways 40 adaptedto engage and slidably retain a dove-tailed member 41. A motor base casting 42 is bolted to the dove-tailedmember the drilling tools 46 projects toward vthe piece of material 22 to be operated upon and by means of the adjustable features just described may be positioned fin many desired positions with respect thereto;

The'tools 46 are preferably attached to the motor 45by means of a removable adaptor 47 illustrated particularly inFigs. 9 and 10. In these figures the housing of the motor 45 terminates in a cylindrical portion 145 about which is closely fitted the body of the adaptor 47. The shaft of themotor. carries a gear l'46ineshing with a pair of gears 147 each carried upon a spindle 148 journalled in an extended'portion149 of the adaptor 47. The drills 46 are fastened to the spindles 148 by means of a well known'form of chuck 150. The adaptor 47 isclamped to the casing of the motor 45by means of a clamp ring 151 secured by bolts 152; By loosening the bolts 152 the adaptor may be rotated to bring the member 10'.

machine. If desired adaptors may be supplied with any convenient number of tool spindles and with varlous distances between tool centers.

For advancing and retracting the working 2 tools, power is applied to acone pulley 48 by means of an electric motor and belt, not shown, or by other suitable means. The cone pulley 48 is freely carried upon a shaft 49 supported upon bearings 50 and 51 carried upon the frame member 10. The shaft 49 car ries a clutch member 52 positioned within the cone pulley 48 and adapted to engage therewith. The said clutch member is splined to the said shaft and may be moved into engaging position by means of a lever 53 mounted upon a shaft 54. Thus, the cone pulley 48 may be continually rotated and the power applied to the shaft 49 only when the lever 53 is operated to engage the clutch.

The shaft 54 is supported upon bearings 55 upon the frame member 10 andcarries a lever 56 connectedby means of a link 57 with a lever 58 carried upon a shaft 59. The shaft 59 extends longitudinally of the machine and is supported upon suitable hearings on the frame members 10 and 11. At a point intermediate of said frame members, the shaft 59 carries a lever 60 fitted wit-h a foot treadle 61. A'counterweight 62 is attached to the said lever and serves normally to maintain the foot treadle in its upper position. By this means the operation of the foot treadle serves to engage the clutch 52 for applying power to the shaft 49. I

The shaft 49 carries a worm 63 engaging a worm wheel 64 carried upon a shaft 65, in turn supported upon suitable bearings 66 upon the frame member 10. The said shaft likewise carries a cam member 67 substantially circular in form and having a single de, pression 68 therein. A lever 69 is carried upon a shaft 70 supported upon suitable bearing members 71 carried by the frame The lever 69 carries a roller 72 adapted to engage the periphery of the cam 67. A link 73 is pivotally fastened to the lever 69; and extends downwardly through an opening in the outer end of a lever mem ber 74 carried upon the shaft 54. The link 73 carries a collar member 75 fixedly attached thereto and adapted to engage the upper snrface of said lever. -A collar member 7 6 is freely carried by the said link and is adapted to engage the lower surface of the lever 74. A compression spring 77 is interposed between the collar 76 and a nut 78 threadedly engaging the lower end of the link 73.

As will be hereinafter described the shaft 65 is adapted to make a single rotation for each advancement and retraction of the working tools 46. By this construction, therefore, the operation of the foot treadle 61 engages the clutch for'applying power to the shaft 49. The resulting motion of theshaft 65 and the cam 67 carried thereby elevates the roller 7 2 from the cam depression 68, thus causing the collar 76 to engage the lever 75%, by means of the pressure of the spring 77, for maintaining the clutch in engaging position untilacomplete revolution of shaft 65 has been made. Upon the completion of the said revolution the roller 72again-drops into the depression 68 and the clutch is. thereby disengaged until the foot treadle 61 is again depressed. By this means a momentary operation of the foot treadle initiates a complete advance and retraction of the working tools and the said tools-automatically stop in the retracting position. i

The shaft 65 carries a cam member 79 having a single depression therein similar to the depression 68 incam-GT. A lever member 80 I, is supported upon a shaft 81 and carries a 22 and replacement thereof by another piece,

roller 182 adapted tov engage the periphery of the earn 7 9. The shaft 81 extends longitudinally of the machine and is suitably supported upon the frame members 10 and 11.

A plurality of lever members 82 are car ried upon the shaft/81 and a rod 83 extends upwardly through a h'olein the outer end of each of said levers. The rods 83 are fitted with fixed collar members 84 engaging the upper surface of said levers and with compression springs 85 engaging the lower surface thereof. The springs 85 are maintained in engaging position by nuts 86 threadedly engaging the lower end of said rods. Each of said rods is pivotally connected at its upper end to a lever 87 Each of said lever members is, in turn pivotally mounted upon a bracket 88 supported upon one of the cross members 21. Each of the levers 87 carries at its outer end a clamping member 89 adapted to engage the upper surface of the piece of material 22 to be operated upon for clamping the same to the cross members 21. By this construction the rotation of shaft 65,

when the foot treadle 61'is operated, elevates,

the roller 182 from the notch in canr79 thus giving a rotation to shaft 81 sufficient to bring the clamping members 89 into clamping position. The springs 85 serve as yielding members for substantially equal distribution of the clamping force to the several clamping members. Upon the completion of a revolw tion of shaft 65, the roller 182 again enters the notch in cam 7 9 and the said clamping members are released for removal of the work The shaft 65 carries at each end a disk 90 having a T-slot 91 therein; A T-bolt 92 engages each of the T-slot-s in a well known manner and each T-bolt 'serves as a pivotal connection for a vertical pitman 93. By means of the T-bolt construction, the pitman connection may be adjusted to give an oscillating movement of a desired amplitude to the pitinan. The upper end ofeach pitman is connected to a lever 94: carried upon a shaft 95. Each of theshafts 95 is supported upon a bracket'member 96 and the said bracket members are in turn supported upon the longitudinal frame members 12 and 13, respectively." Each of the shafts 95 carries a spur gear 9? adapted to engage a rack 98. The

racks 98 are supported upon the dove-tailed guide-ways 15 and are freefor longitudinal movement with respect thereto. A pitman 99 is attached to the lever 94- at the rear of the machine and extends upwardly to a piv otal connection with a lever 100. The lever 100is supported upon a stub shaft 101, in I turn carried-by bracket members 102 supported uponthe longitudinal frame member 18. Between the brackets 102, theshaft 101 carries a spur gear 103 adapted to engage a rack 104. The rack 104 is supported upon the frame member 18 and is positioned be. tween the clove-tailed guide-ways 19 and is free for longitudinal movement with respect to said framemember. i p 1 By this construction, a single revolution of i the shaft 65 serves to impart a single forward and backward movement to each of the racks 98 and the rack 104. 'The amplitude of said movement may be adjusted by means of the T-bolt and slot adjustment for the pinion 93.

Each of the working tool units 16 and 20 is fitted with a spur gear 105 adapted to enjecting portion of the casting 28. The

bevel gear 108 is fixed to the said shaft by means of a set screw 111'. The shaft 109 car rise a spur gear 112adapted to engage a rack 113 fixedly carried by the dove-tailed member ll. By means ofthis construction the re ciprocating motion of the racks 98 and 104i previously described is transmitted to the dove-tailed member llwfor advancing and retracting the said member and. the'motor and tool carried thereby inthe direction of the. axis of said motor and tool.

In the positioning of thetool units, the set screw 111 is removed from the gear 108. The entire tool unit may then be moved along the frame members 12, 13 or 18 to any desiredpo sition without advancing and retracting movement of, the. tools. Similarly, the casting 26 may be moved upon the casting 28, the f casting35 mayberotated upon the casting. i i

26 and the finotorbase 42 may be adjusted upon the dove-tailedmember{11. When the said adjustments are complete the set screw '111' is replaced and the machine is ready for operation. 7 p It is to be understood that numerous dew partures from the details of the machine herein described may be made Without departure from the spirit and scope of the invention as defined in the following claims.

The invention claimed is: 1. In a machine tool, the combination of a frame having a guideway formedthereon, a carriage slidably adjustable upon said guideWay, a substantially L-shaped member supported by said carriage and having one of its legs engaging said carriage and slidably adjustable thereon in a direction transverse to the direction of adjustment of the carriage upon the guideway, a member rotatably mounted upon the second leg of said 36 L-shaped member, a motor base slidably mounted upon said rotatably mounted member, a rotary tool and motor unit fastened to said motor base, a movable member mounted uponsaid frame, and connecting means '25 between said member and said motor base for sliding the latter upon said rotatable member, said means being operable irrespective of the adjusted position of said carriage upon said guideway, and said L-shaped member upon said carriage and irrespective of the rotated position of said rotatable member. r n 2. In a machine tool, the combination of a frame having aguideWay formed thereon, a

carriage slidably adjustable upon said guide- Way, a substantially L-shaped member supported by said carriage and having one of its 7 legs engaging said carriage and slidably adjustable thereon in a direction transverse to 40 the direction of adjustment of the carriage upon the guideway, a member rotatably mounted upon the second leg of said L- shaped member, a motor base slidably mounted upon said rotatably mounted member, a rotary tool and motor unit fastened to said motor base, a movable member mount ed upon said frame, a'rack slidable upon said frame in the direction of adjustment of said carriage, a shaft carried by said carriage, a gear on said shaft engaging said'rack, a second shaft transverse to said first shaft and at l ast partially supported upon said L- shaped member, bevel gears connecting said 7 shafts, a gear carried upon said second shaft and concentric with the axis of rotation of said rotatable member, and a rack carried by said motor base and engaging said last-men tioned gear. I i

In a machine tool, the combination of a frame having'a guideWa-yformed thereon, a

V carriage slidably adjustable upon said guide- Way, a susbtantially L-shaped member supported by said carriage and having one of its engaging said carriage and slidably adjustable thereon in a direction transverse to the direction of adjustment of the carriage upon the guideWay, a member rotatably mounted upon the second leg of said L- shaped member, a motor base: slidably mounted upon said'rotatably mounted member, a rotary tool and motor unit fastened shaft and at least partially supported upon said L-shaped member, bevel gears connecting said shafts, a gear carried upon sald sec- 0nd shaft and concentric with the axis of rotation of said rotatable member, a rack ca-rried by said motor base and engaging said last-ment oned gear, one of said gears being detachably secured to its shaft to permit adjustment of said carriage upon said guide-' Way, said L-shaped member upon said carriage, sald rotatable member upon said L- shaped member-and said motor base upon said rotatable member. 7

In Witness whereof, I-have hereuntoaffixed my signature.

WILLIAM H. 'BAUCH. 

